From the office of Prime Minster Winston Churchill; postmarked on obverse, "London S. W. I., 11:15 AM, 29, 1953, E", addressed to Mr. and Mrs. D. W. Polkinghorn, 5842 Mission Road, Mission, Kansas, United States of America", Queen Elizabeth II stamp in upper right corner; reverse side stamped with Prime Minister's seal, "10 Downing Street, Whitehall, S. W. I.", worded, "The Prime Minster sends you his warm thanks for your kind letter". Color: BK,WH